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  "specs": {
    "Fill": "RDS certified 850 FillPower goose down",
    "Down Treatment": "Non-PFAS Ultra Dry",
    "Shell Material": "10D nylon with non-PFAS DWR",
    "Liner Material": "10D nylon",
    "Insulation": "RDS certified 850 FillPower goose down with non-PFAS Ultra Dry treatment",
    "Sizes": "Regular, Long, Double",
    "Weight": "363 g (Regular), 493 g (Long), 730 g (Double)",
    "Temperature Ratings": "45°F (30°C), 30°F (15°C), 15°F (7°C), 0°F (-18°C), 7°C"
  },
  "features": [
    "RDS certified 850 FillPower goose down: Delivers high warmth and energy return for superior insulation",
    "Non-PFAS Ultra Dry down treatment: Enhances water resistance and environmental sustainability",
    "Technical hood and anatomical footbox: Retain warmth and keep out wind and moisture",
    "10D nylon shell with non-PFAS DWR: Provides lightweight, highly water-repellent protection",
    "Breathable 10D liner fabric: Prevents overheating and sheds wind and condensation"
  ],
  "description": "Spark Down Sleeping Bag \nIf you're counting grams, but still count on a great night's sleep, the Spark may be the right bag for you.\nFilled with RDS-certified 850+ fillpower goose down treated with a non-PFAS Ultra-Dry Down treatment, the Spark is constructed with a technical hood and zipper draft tube to retain warmth. Comfort comes from a super-breathable 10 denier liner fabric, while a 10D shell with a non-PFAS DWR plus a highly water repellent hood and footbox fabric shed wind and condensation.\nThe full-length zipper model can be zipped to an equivalent Women's Spark for comfort that couples can share\nTech Specs \nMaterials \nShell: 100% nylon \nLining: 100% nylon \nDown Fill: 90/10 Goose Down \nStuff Sack: 100% nylon - excluding trims \nInsulation \nRDS-certified, 850+ fillpower goose down with a non-PFC Ultra-Dry Down treatment \nSpecifications by Temp Rating & Size \nTemp Rating & Size \nWeight \nPacked Weight \nDimension \nPacked Size \nCompressed Volume \nLength \nRecommended User Height \nFill Weight \nTemp Rating (ISO Lower) \nTemp Rating (ISO Comfort) \n45°F / Regular \n363 g | 12.8 oz \n398 g | 14.0 oz \n196 x 77.5 cm | 77.2 x 30.5 in \n23 x 12.5 x 9 cm | 9 x 5 x 4 in \n2 L \n196cm | 77in \n185 ",
  "researched_at": "2026-11-08T07:46:08.33+00:00",
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        "id": "denier",
        "label": "Denier (D)",
        "text": "Fabric thickness. Lower numbers are lighter; higher numbers resist abrasion and punctures better."
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}